Yarn-doubling frame



April 23, 1929. c nw c 1,710,656

YARN DOUBLI NG FRAME Filed Aug. 192 2 Sheets-Sheet 2 [2: var; for:-

M By His [ll/annex:

Patented Apr. 23, 1929.

UNITED STATES 1,710,656 PATENT OFFICE.

FLETCHER CHADWICK, OF HEBDEN BRIDGE, ENGLAND, ASSIGNOB T COEDS LIMITED,01 HEBDEN BRIDGE, ENGLAND, A BRITISH LIMITED LIABILITY COMPANY.

YARN-DOUBLING FRAME.

Application filed August 8, 1927, Serial No. 211,565, and in GreatBritain February 12, 1927.

It has long been known to double yarns directly from a yarn beam in ayarn doubling frame, the beam being rotated by drums or by the drawingrollers of the frame drawing the yarns from the beam to give thenecessary feed of yarn. The beam has however so far as 1 am aware alwaysbeen mounted longitudinally of the frame and this in a long doublingframe necessitates the drawing of the yarns vertically or approximatelyso from the beam, tlnwnigh'guides placed adjacent to the said beam, theyarns being thence distributml to the yarn guides behind the respectivedrawing roller stands, and through the roller nips to the doublingspindles. It is a desideratum -for the avoidance of abrasion of the yarnand to preserve its elasticity, that the yarn should be subjected to asfew angles or bends as possible but drawing of the yarn endsverticallyfrom the beam and thence distributing them to the spindlesmakes a sharp angle in each end of yarn unavoidable before suchdistribution commences.

It the object of the present invention to provide a simple method ofdoubling yarns from the beam in a doubling frame without the use ofguides for the yarn except those guides which are situated behind therollers which feed the yarns to the doubling spindles, and according tothe invention l mount a bean'l either vertically or horizontally andwith its longitudinal axis at right angles to the length of the doublingframe and by means of the usual rollers draw the yarns from the beamdirect to the spindles, each tape of yarn thus taking the shortest andstraightest path possible from the beam to the usual thread guide behindthe spindle drawing rollers. The beam axis being thus perpendicular tothe length of the frame or to a line which is parallel to the saidlength, straight lines may be drawn from the beam surface to spindles oneach half of the frame, and to the spindles on both sides of such halfof the frame, and as these lines must each form a dilierent angle to thelongitudinal axis of the beam each tape of yarns drawn from the saidbeam to a thread guide is clear of the neighbouring yarn tapes.

The method and suitable apparatus for its achievement will now be fullydescribed with the aid of the annexed drawings in which:

Figure 1 is a plan of part of a doubling frame showing a beam centrallymounted thereon in a vertical position, Figure 2 being i an elevationshowing, for the greater part in section, details of the means formaintaining the beam in position;

Figure 3 is an end view of Figure 2 showing the course of a single yarnfrom the beam to a spindle;

Figure 4 is an elevation showing the position of a beam which has beenplaced horizontally and centrally of the doubling frame, and

Figures 5 and 6 are res ectively side elevalion and plan of a simi ararrangement to that of Figure 4 but with two beams in position, eachbeing horizontal and each being placed over a point which is central ofa section of the doubling frame below, to feed the spindles on eitherside of the beam in its own particular section.

So far as the doubling frame itself is concernod the views are diaranimatical and show only sufficient of the name to allow of accurateand complete description of the present. invention. Only the lines ofrollers 7, which are as usual, are shown therefore, with the position offour spindles 8 having bobbins 9 thereon; the travellers 10, the usualthread guides 11 behind the drawingrollers, and the guide rail 7".

Referring now more particularly to Figures 1, 2, and 3 centrally of thedoubling frame is a fixed member 12 which is centrally bored andreceives within it the cylindrical pelulent portion 13 of a turntable 14which is annular to allow of the reception within it and within themember 13 of the end of a beam shaft 15 and boss 16 of a beam 17. Anannular plate 18 is provided, fixed in any convenient manner to themachine framing,

and between the turntable 14 and the latter are provided the rollerbearings 19. The table 14 can therefore turn freely and stead- 11ywithout any lateral play. A beam 17, which has been wound with yarns a:in the usual manner for doubling, is brought to the frame by means of arunway which is of known form and is merely indicated by the rail 20. Tothe runway rail 20 is fixed by aflange 21 a cylindrical bearing 22 whichby means of a lower flange retains within it the flanged bush 23 whilstallowing of the said bush being slidden up and down within it. The beam17 being brought, the bush 23 is raised and the beam placed in positionwith its lower flange resting on the turntable 14, and duly adjusted Thebush 23 then dropped to encircle the upper end of the beam shaft 15 andthe yarns 02 being brought to their respective spindle rollers 7 and tothe bobbins 9, through the guides 11 which may be of any suitable andknown form, doubling commences, the combined pull of the yarns servingto rotate the beam 17 around its vertical axis. Any suitable frictionbrake may be applied to the turn table 14 to prevent possibleoverrunning of the yarns by the impetus given to the beam and to ensurethe necessary tension of the yarns. The path of the yarns from the beamto spindle is shown in Figure 1, the beam rotating clockwise and theyarns from the highest portion of the beam in situ going to the spindleswhich are the furthest from the said beam, those yarns which are unwoundfrom the lowestpart of the beam being fed to the nearest iindles, asseen in liigure 1. The intermediate tapes of yarns take up theirrelative positions without entanglcn'ient as a result of thisarrangement. It will be noted that as the space over the doubling frameon either side of the beam is clear of the guides or other encumbrances,the path of the yarns coming from the beam clear to the spindles on bothsides of the frame.

In Figure 4; the shaft neck of the beam 17 is mounted in a hangingbracket 24one of which brackets is provided for each neck of the beamshaftand this bracket is suspended upon a rod 25 fixed above the frame.The yarns a; are led from the lower surface of the rotating beam to theleft of the doubling frame, as viewed in the drawing, and those from theupper surface to the right hand side of the frame, the spindles on eachside of the frame being thus supplied.

Figure 5 is a duplication of the mounting of Figure 4, two beams 17being mounted in brackets 24 each beam being situate over the centre ofa section of the frame and supplying the spindles on both sides of theframe of its own particular section. The course of the yarns from beamto spindles in this modification, and also in the modification of Figure4, will be understood from Figure 6. Yarns 00 proceeding to the spindlesto the left of each beam of Figure (3 and of the beam of Fiji} ure 4 arefed from the lower surface of the rotating beam 17 and yarns a?proceeding to the spindles to the right are fed from the upper surface,the beam 17 of Figure l or the beams 17 of Figure 5 rotating clockwise.

The height of the beam or beams above the doubling frame in themodilieatimis of Figures l, 5 and 6 may be any suitable. For instain-ewith a very long frame where it is do sired to double from one beamonly, as in Figure 1- the beam will be raismfh-variable lengths ofbrackets being rendered available for use for the purpose--to a. heightto ensure that all the yarns shall have a free run to their respectivespindles. \Vith such a long doubling frame, if a plurality of beams arecnu'iloyed as in Figures 5 and (3 the traverse of the yarns from thebeam to the furthest spindle is of course shorter.

In these modifications where the beam or beams is or are horizontal,suitable means may be employed as in the construct ion when the beam isplaced vertically, to prevent the said beam or beams from overrunningthe yarns and to ensure tension on the latter. burh braking means for a.horizontal beam may COlIlPllSU av rope fixed at one end in anyconvenient way and passed over a. boss of the beam, a counterweight onthe hanging end of the rope ensuring the required friction be tween bossand rope.

I claim A method of doubling yarns in a doubling frame direct from ayarn beam on which they have been wound, such method consisting inmounting the yarn beam rotatably with its longitudinal axis at rightangles to a plane in which the length of the doubling frame is situated,and drawing the yarns by means of the u. all rollers direct from thebeam to the guides behind the said rollers, the yarns taking straightpaths from beam to thread guide, and the rollers delivering the yarns totheir respective spindles.

In testimony whereof I have hereunto set my hand.

FLETCHER CHAD\VICK.

